Observations on the spermary of the freshwater spiny eel, Macrognathus aculeatum (Bloch), during the reproductive cycle.
D000818:Animals; D004524:Eels / Q000033:anatomy & histology*; D008297:Male; D008540:Meiosis; D010507:Periodicity; D012621:Seasons; D013094:Spermatozoa; D013696:Temperature; D013737:Testis / Q000033:anatomy & histology / Q000166:cytology / Q000502:physiology